s=a1*t²/2=a2*(2*t)²/2
a1=4*a2
m*a1=m*g*sinα+μ*m*g*cosα
a1=g*(sinα+μ*cosα)
a2=g*(sinα+μ*cosα)
μ=(3/5)*tgα
s=a1*t²/2=a2*(2*t)²/2
a1=4*a2
m*a1=m*g*sinα+μ*m*g*cosα
a1=g*(sinα+μ*cosα)
a2=g*(sinα+μ*cosα)
μ=(3/5)*tgα